Forensic evidence record · ev-mn1820024-f-stillwater-pfba
Perfluorobutanoic acid (PFBA)
A single published measurement record with its qualifier, sampling context, source identifier, method note, and stated limitations kept together.
Published evidence record
118 ng/LReported measurementSource observations (15)
- PFBA — Sample date: 2024-12-10
Detected above reporting limit. = 0.106 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32404100009 · Method EPA 533
- PFBA — Sample date: 2025-06-02
Detected above reporting limit. = 0.108 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32501529005 · Method EPA 533
- PFBA — Sample date: 2024-12-10
Detected above reporting limit. = 0.113 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32404100005 · Method EPA 533
- PFBA — Sample date: 2025-06-02
Detected above reporting limit. = 0.116 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32501529007 · Method EPA 533
- PFBA — Sample date: 2024-12-10
Detected above reporting limit. = 0.101 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32404100011 · Method EPA 533
- PFBA — Sample date: 2025-06-02
Detected above reporting limit. = 0.102 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32501529009 · Method EPA 533
- PFBA — Sample date: 2024-12-10
Detected above reporting limit. = 0.0969 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32404100013 · Method EPA 533
- PFBA — Sample date: 2025-06-02
Detected above reporting limit. = 0.101 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32501529011 · Method EPA 533
- PFBA — Sample date: 2024-12-10
Detected above reporting limit. = 0.0931 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32404100015 · Method EPA 533
- PFBA — Sample date: 2025-06-02
Detected above reporting limit. = 0.118 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32501529013 · Method EPA 533
- PFBA — Sample date: 2024-12-10
Detected above reporting limit. = 0.0746 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32404100001 · Method EPA 533
- PFBA — Sample date: 2025-06-02
Detected above reporting limit. = 0.0782 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32501529001 · Method EPA 533
- PFBA — Sample date: 2024-12-10
Detected above reporting limit. = 0.113 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32404100003 · Method EPA 533
- PFBA — Sample date: 2024-12-10
Detected above reporting limit. = 0.0666 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32404100007 · Method EPA 533
- PFBA — Sample date: 2025-06-02
Detected above reporting limit. = 0.0723 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 32501529003 · Method EPA 533
Measurement evidence
- Analyte
- Perfluorobutanoic acid (PFBA)
- Result qualifier
- =
- Reference basis
- No federal or state limit; shown for transparency
- Sampling location
- Entry Point to Distribution
- Water system ID
- MN1820024
- Source ID
- src-ucmr5-2024
Laboratory context
No laboratory method note was published with this record.
Sampling context
This result represents a entry point to distribution sample. It does not establish the condition at every distribution point or household tap.
Record limitation
System-level entry-point monitoring; not a measurement of the water at an individual household tap.
Source provenance
UCMR5 Analytical Results
Fifth Unregulated Contaminant Monitoring Rule (UCMR5) — PFAS occurrence data
U.S. Environmental Protection Agency · Published 2024
Nationwide entry-point monitoring for 29 PFAS and lithium under the fifth UCMR cycle. Results are entry-point-to-distribution samples, not household-tap measurements.
How to interpret this record
This page preserves one measurement. Interpretation requires its qualifier, reporting limit, reference basis, date, sampling location, and limitations; the number alone is not a safety verdict.
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